parallel_odoc/Dragon.java at master · parallel5940/parallel_odoc · GitHub

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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;

class Point {
    int x;
    int y;

    Point(int x, int y) {
        this.x = x;
        this.y = y;
    }
}

class Dragon {
    ArrayList<Point> pnts;
    int dir;
    int gen;

    Dragon(int dir, int gen) {
        pnts = new ArrayList<>();
        this.dir = dir;
        this.gen = gen;
    }
}

class Main {
    static ArrayList<Dragon> dragons;
    static int[][] map;
    static int height = 101;
    static int width = 101;

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String input = br.readLine();
        int dragonNum = Integer.parseInt(input);

        dragons = new ArrayList<>();
        map = new int[height][width];

        for (int i = 0; i < dragonNum; i++) {
            String input2 = br.readLine();
            String[] temp2 = input2.split(" ");

            int x = Integer.parseInt(temp2[0]);
            int y = Integer.parseInt(temp2[1]);
            int dir = Integer.parseInt(temp2[2]);
            int gen = Integer.parseInt(temp2[3]);

            dragons.add(new Dragon(dir, gen));
            dragons.get(i).pnts.add(new Point(x, y));
            // 2,4 -> 4,2
            map[y][x] = 1;
        }

        for (int i = 0; i < dragonNum; i++) {
            initDragon(dragons.get(i));
            MakeDragonCurve(dragons.get(i));
        }

        System.out.println(getBoxNum());
    }

    // 00 01 10 11
    // 01 02 11 12
    static int getBoxNum() {
        int count = 0;
        for (int i = 0; i < height - 1; i++) {
            for (int j = 0; j < width - 1; j++) {
                if (map[i][j] == 1 && map[i][j + 1] == 1 && map[i + 1][j] == 1 && map[i + 1][j + 1] == 1) {
                    count++;
                }
            }
        }

        return count;
    }

    static void initDragon(Dragon dragon) {
        Point pnt = dragon.pnts.get(0);

        switch (dragon.dir) {
            case 0:
                dragon.pnts.add(new Point(pnt.x + 1, pnt.y));
                map[pnt.y][pnt.x + 1] = 1;
                break;
            case 1:
                dragon.pnts.add(new Point(pnt.x, pnt.y - 1));
                map[pnt.y - 1][pnt.x] = 1;
                break;
            case 2:
                dragon.pnts.add(new Point(pnt.x - 1, pnt.y));
                map[pnt.y][pnt.x - 1] = 1;
                break;
            case 3:
                dragon.pnts.add(new Point(pnt.x, pnt.y + 1));
                map[pnt.y + 1][pnt.x] = 1;
        }
    }

    static void MakeDragonCurve(Dragon dragon) {
        // gen번 회전 -> gen세대
        for (int i = 0; i < dragon.gen; i++) {
            rotate(dragon);
        }
    }

    static void rotate(Dragon dragon) {
        ArrayList<Point> temp = dragon.pnts;

        Point endPoint = temp.get(temp.size() - 1);
        ArrayList<Point> tempList = new ArrayList<>();

        // 끝점을 기준으로 정렬
        for (int i = 0; i < temp.size(); i++) {
            int x = temp.get(i).x;
            int y = temp.get(i).y;

            x -= endPoint.x;
            y -= endPoint.y;

            tempList.add(new Point(x, y));
        }
        dragon.pnts = tempList;
        rotate90(dragon);

        // 원래대로 돌려놓기
        for (int i = 0; i < dragon.pnts.size(); i++) {
            dragon.pnts.get(i).x += endPoint.x;
            dragon.pnts.get(i).y += endPoint.y;
        }
        paint(dragon);
    }

    static void rotate90(Dragon dragon) {
        ArrayList<Point> temp = dragon.pnts;
        int size = temp.size();
        for (int i = size - 2; i >= 0; i--) {
            int x = 0 * temp.get(i).x + -1 * temp.get(i).y;
            int y = 1 * temp.get(i).x + 0 * temp.get(i).y;
            temp.add(new Point(x, y));
        }

    }

    static void paint(Dragon dragon) {
        ArrayList<Point> arrList = dragon.pnts;

        for (int i = 0; i < arrList.size(); i++) {
            map[arrList.get(i).y][arrList.get(i).x] = 1;
        }
    }
}